I have a parasitic drain that I have been unable to track down mostly because I haven't put any real effort into looking for it. If the Expy is driven regularly or at least every 2 weeks or so the drain isn't an issue. Let the Expy sit for 3 weeks though and totally dead battery. I work out of town often gone for weeks at a time and my wife doesn't like driving the Expy. Actually she likes driving the Expy but hates the slightly mildewy smell claiming it makes her clothes smell like mildew.
For a while I would disconnect the battery when leaving but I'm entirely to lazy to keep doing that.
Got a good deal on the water proof permanent install Deltran Battery Tender. Works great! Battery stays fully charged.
Still need to tidy up the AC cord routing but the tender is functional.
The tender was larger than I thought it would be but tucks in nicely between the inner fender and the fuse box.
Connected the positive lead to the hot side of this relay.
and a convenient chassis ground.
For a while I would disconnect the battery when leaving but I'm entirely to lazy to keep doing that.
Got a good deal on the water proof permanent install Deltran Battery Tender. Works great! Battery stays fully charged.
Still need to tidy up the AC cord routing but the tender is functional.
The tender was larger than I thought it would be but tucks in nicely between the inner fender and the fuse box.
Connected the positive lead to the hot side of this relay.
and a convenient chassis ground.